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Commit | Line | Data |
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d04bc300 SH |
1 | |
2 | #include <stdio.h> | |
3 | #include <stdlib.h> | |
4 | #include <unistd.h> | |
5 | #include <time.h> | |
6 | #include <sys/socket.h> | |
7 | #include <sys/time.h> | |
8 | #include <netinet/in.h> | |
9 | #include <linux/if.h> | |
10 | #include <linux/if_bridge.h> | |
11 | #include <string.h> | |
64108901 | 12 | #include <stdbool.h> |
d04bc300 | 13 | |
64108901 | 14 | #include "libnetlink.h" |
d04bc300 SH |
15 | #include "utils.h" |
16 | #include "br_common.h" | |
17 | ||
64108901 VY |
18 | unsigned int filter_index; |
19 | ||
d04bc300 SH |
20 | static const char *port_states[] = { |
21 | [BR_STATE_DISABLED] = "disabled", | |
22 | [BR_STATE_LISTENING] = "listening", | |
23 | [BR_STATE_LEARNING] = "learning", | |
24 | [BR_STATE_FORWARDING] = "forwarding", | |
25 | [BR_STATE_BLOCKING] = "blocking", | |
26 | }; | |
27 | ||
28 | extern char *if_indextoname (unsigned int __ifindex, char *__ifname); | |
29 | ||
30 | static void print_link_flags(FILE *fp, unsigned flags) | |
31 | { | |
32 | fprintf(fp, "<"); | |
33 | if (flags & IFF_UP && !(flags & IFF_RUNNING)) | |
34 | fprintf(fp, "NO-CARRIER%s", flags ? "," : ""); | |
35 | flags &= ~IFF_RUNNING; | |
36 | #define _PF(f) if (flags&IFF_##f) { \ | |
37 | flags &= ~IFF_##f ; \ | |
38 | fprintf(fp, #f "%s", flags ? "," : ""); } | |
39 | _PF(LOOPBACK); | |
40 | _PF(BROADCAST); | |
41 | _PF(POINTOPOINT); | |
42 | _PF(MULTICAST); | |
43 | _PF(NOARP); | |
44 | _PF(ALLMULTI); | |
45 | _PF(PROMISC); | |
46 | _PF(MASTER); | |
47 | _PF(SLAVE); | |
48 | _PF(DEBUG); | |
49 | _PF(DYNAMIC); | |
50 | _PF(AUTOMEDIA); | |
51 | _PF(PORTSEL); | |
52 | _PF(NOTRAILERS); | |
53 | _PF(UP); | |
54 | _PF(LOWER_UP); | |
55 | _PF(DORMANT); | |
56 | _PF(ECHO); | |
57 | #undef _PF | |
58 | if (flags) | |
59 | fprintf(fp, "%x", flags); | |
60 | fprintf(fp, "> "); | |
61 | } | |
62 | ||
63 | static const char *oper_states[] = { | |
38df7ac9 | 64 | "UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN", |
d04bc300 SH |
65 | "TESTING", "DORMANT", "UP" |
66 | }; | |
67 | ||
b1b7ce0f VY |
68 | static const char *hw_mode[] = {"VEB", "VEPA"}; |
69 | ||
d04bc300 SH |
70 | static void print_operstate(FILE *f, __u8 state) |
71 | { | |
72 | if (state >= sizeof(oper_states)/sizeof(oper_states[0])) | |
73 | fprintf(f, "state %#x ", state); | |
74 | else | |
75 | fprintf(f, "state %s ", oper_states[state]); | |
76 | } | |
77 | ||
b1b7ce0f VY |
78 | static void print_portstate(FILE *f, __u8 state) |
79 | { | |
80 | if (state <= BR_STATE_BLOCKING) | |
81 | fprintf(f, "state %s ", port_states[state]); | |
82 | else | |
83 | fprintf(f, "state (%d) ", state); | |
84 | } | |
85 | ||
86 | static void print_onoff(FILE *f, char *flag, __u8 val) | |
87 | { | |
88 | fprintf(f, "%s %s ", flag, val ? "on" : "off"); | |
89 | } | |
90 | ||
91 | static void print_hwmode(FILE *f, __u16 mode) | |
92 | { | |
93 | if (mode >= sizeof(hw_mode)/sizeof(hw_mode[0])) | |
94 | fprintf(f, "hwmode %#hx ", mode); | |
95 | else | |
96 | fprintf(f, "hwmode %s ", hw_mode[mode]); | |
97 | } | |
98 | ||
d04bc300 SH |
99 | int print_linkinfo(const struct sockaddr_nl *who, |
100 | struct nlmsghdr *n, void *arg) | |
101 | { | |
102 | FILE *fp = arg; | |
103 | int len = n->nlmsg_len; | |
104 | struct ifinfomsg *ifi = NLMSG_DATA(n); | |
105 | struct rtattr * tb[IFLA_MAX+1]; | |
106 | char b1[IFNAMSIZ]; | |
107 | ||
108 | len -= NLMSG_LENGTH(sizeof(*ifi)); | |
109 | if (len < 0) { | |
110 | fprintf(stderr, "Message too short!\n"); | |
111 | return -1; | |
112 | } | |
113 | ||
114 | if (!(ifi->ifi_family == AF_BRIDGE || ifi->ifi_family == AF_UNSPEC)) | |
115 | return 0; | |
116 | ||
64108901 VY |
117 | if (filter_index && filter_index != ifi->ifi_index) |
118 | return 0; | |
119 | ||
b1b7ce0f | 120 | parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED); |
d04bc300 SH |
121 | |
122 | if (tb[IFLA_IFNAME] == NULL) { | |
123 | fprintf(stderr, "BUG: nil ifname\n"); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | if (n->nlmsg_type == RTM_DELLINK) | |
128 | fprintf(fp, "Deleted "); | |
129 | ||
130 | fprintf(fp, "%d: %s ", ifi->ifi_index, | |
1465db1a | 131 | tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>"); |
d04bc300 | 132 | |
38df7ac9 | 133 | if (tb[IFLA_OPERSTATE]) |
1465db1a | 134 | print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE])); |
38df7ac9 | 135 | |
d04bc300 SH |
136 | if (tb[IFLA_LINK]) { |
137 | SPRINT_BUF(b1); | |
1465db1a | 138 | int iflink = rta_getattr_u32(tb[IFLA_LINK]); |
d04bc300 SH |
139 | if (iflink == 0) |
140 | fprintf(fp, "@NONE: "); | |
1465db1a | 141 | else |
38df7ac9 | 142 | fprintf(fp, "@%s: ", |
d04bc300 | 143 | if_indextoname(iflink, b1)); |
1465db1a | 144 | } else |
d04bc300 | 145 | fprintf(fp, ": "); |
d04bc300 SH |
146 | |
147 | print_link_flags(fp, ifi->ifi_flags); | |
148 | ||
149 | if (tb[IFLA_MTU]) | |
1465db1a | 150 | fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU])); |
d04bc300 | 151 | |
1465db1a | 152 | if (tb[IFLA_MASTER]) |
38df7ac9 | 153 | fprintf(fp, "master %s ", |
1465db1a | 154 | if_indextoname(rta_getattr_u32(tb[IFLA_MASTER]), b1)); |
d04bc300 SH |
155 | |
156 | if (tb[IFLA_PROTINFO]) { | |
b1b7ce0f VY |
157 | if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) { |
158 | struct rtattr *prtb[IFLA_BRPORT_MAX+1]; | |
159 | ||
160 | parse_rtattr_nested(prtb, IFLA_BRPORT_MAX, | |
161 | tb[IFLA_PROTINFO]); | |
162 | ||
163 | if (prtb[IFLA_BRPORT_STATE]) | |
164 | print_portstate(fp, | |
165 | rta_getattr_u8(prtb[IFLA_BRPORT_STATE])); | |
166 | if (prtb[IFLA_BRPORT_PRIORITY]) | |
167 | fprintf(fp, "priority %hu ", | |
168 | rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY])); | |
169 | if (prtb[IFLA_BRPORT_COST]) | |
170 | fprintf(fp, "cost %u ", | |
171 | rta_getattr_u32(prtb[IFLA_BRPORT_COST])); | |
4cd20da1 SH |
172 | |
173 | if (show_details) { | |
174 | fprintf(fp, "%s ", _SL_); | |
175 | ||
176 | if (prtb[IFLA_BRPORT_MODE]) | |
177 | print_onoff(fp, "hairpin", | |
178 | rta_getattr_u8(prtb[IFLA_BRPORT_MODE])); | |
179 | if (prtb[IFLA_BRPORT_GUARD]) | |
180 | print_onoff(fp, "guard", | |
181 | rta_getattr_u8(prtb[IFLA_BRPORT_GUARD])); | |
182 | if (prtb[IFLA_BRPORT_PROTECT]) | |
183 | print_onoff(fp, "root_block", | |
184 | rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT])); | |
185 | if (prtb[IFLA_BRPORT_FAST_LEAVE]) | |
186 | print_onoff(fp, "fastleave", | |
187 | rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE])); | |
f0f4ab60 VY |
188 | if (prtb[IFLA_BRPORT_LEARNING]) |
189 | print_onoff(fp, "learning", | |
190 | rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING])); | |
191 | if (prtb[IFLA_BRPORT_UNICAST_FLOOD]) | |
192 | print_onoff(fp, "flood", | |
193 | rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD])); | |
4cd20da1 | 194 | } |
b1b7ce0f VY |
195 | } else |
196 | print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO])); | |
d04bc300 SH |
197 | } |
198 | ||
b1b7ce0f VY |
199 | if (tb[IFLA_AF_SPEC]) { |
200 | /* This is reported by HW devices that have some bridging | |
201 | * capabilities. | |
202 | */ | |
203 | struct rtattr *aftb[IFLA_BRIDGE_MAX+1]; | |
204 | ||
205 | parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]); | |
206 | ||
a40d0827 JF |
207 | if (aftb[IFLA_BRIDGE_MODE]) |
208 | print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE])); | |
b1b7ce0f | 209 | } |
d04bc300 SH |
210 | |
211 | fprintf(fp, "\n"); | |
212 | fflush(fp); | |
213 | return 0; | |
214 | } | |
64108901 VY |
215 | |
216 | static void usage(void) | |
217 | { | |
218 | fprintf(stderr, "Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n"); | |
219 | fprintf(stderr, " [ guard {on | off} ]\n"); | |
220 | fprintf(stderr, " [ hairpin {on | off} ] \n"); | |
221 | fprintf(stderr, " [ fastleave {on | off} ]\n"); | |
222 | fprintf(stderr, " [ root_block {on | off} ]\n"); | |
f0f4ab60 VY |
223 | fprintf(stderr, " [ learning {on | off} ]\n"); |
224 | fprintf(stderr, " [ flood {on | off} ]\n"); | |
64108901 VY |
225 | fprintf(stderr, " [ hwmode {vepa | veb} ]\n"); |
226 | fprintf(stderr, " bridge link show [dev DEV]\n"); | |
227 | exit(-1); | |
228 | } | |
229 | ||
230 | static bool on_off(char *arg, __s8 *attr, char *val) | |
231 | { | |
232 | if (strcmp(val, "on") == 0) | |
233 | *attr = 1; | |
234 | else if (strcmp(val, "off") == 0) | |
235 | *attr = 0; | |
236 | else { | |
237 | fprintf(stderr, | |
238 | "Error: argument of \"%s\" must be \"on\" or \"off\"\n", | |
239 | arg); | |
240 | return false; | |
241 | } | |
242 | ||
243 | return true; | |
244 | } | |
245 | ||
246 | static int brlink_modify(int argc, char **argv) | |
247 | { | |
248 | struct { | |
249 | struct nlmsghdr n; | |
250 | struct ifinfomsg ifm; | |
251 | char buf[512]; | |
252 | } req; | |
253 | char *d = NULL; | |
f0f4ab60 VY |
254 | __s8 learning = -1; |
255 | __s8 flood = -1; | |
64108901 VY |
256 | __s8 hairpin = -1; |
257 | __s8 bpdu_guard = -1; | |
258 | __s8 fast_leave = -1; | |
b1b7ce0f | 259 | __s8 root_block = -1; |
64108901 VY |
260 | __u32 cost = 0; |
261 | __s16 priority = -1; | |
262 | __s8 state = -1; | |
263 | __s16 mode = -1; | |
264 | __u16 flags = BRIDGE_FLAGS_MASTER; | |
265 | struct rtattr *nest; | |
266 | ||
267 | memset(&req, 0, sizeof(req)); | |
268 | ||
269 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
270 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
271 | req.n.nlmsg_type = RTM_SETLINK; | |
272 | req.ifm.ifi_family = PF_BRIDGE; | |
273 | ||
274 | while (argc > 0) { | |
275 | if (strcmp(*argv, "dev") == 0) { | |
276 | NEXT_ARG(); | |
277 | d = *argv; | |
278 | } else if (strcmp(*argv, "guard") == 0) { | |
279 | NEXT_ARG(); | |
280 | if (!on_off("guard", &bpdu_guard, *argv)) | |
281 | exit(-1); | |
282 | } else if (strcmp(*argv, "hairpin") == 0) { | |
283 | NEXT_ARG(); | |
284 | if (!on_off("hairping", &hairpin, *argv)) | |
285 | exit(-1); | |
286 | } else if (strcmp(*argv, "fastleave") == 0) { | |
287 | NEXT_ARG(); | |
288 | if (!on_off("fastleave", &fast_leave, *argv)) | |
289 | exit(-1); | |
b1b7ce0f VY |
290 | } else if (strcmp(*argv, "root_block") == 0) { |
291 | NEXT_ARG(); | |
292 | if (!on_off("root_block", &root_block, *argv)) | |
293 | exit(-1); | |
f0f4ab60 VY |
294 | } else if (strcmp(*argv, "learning") == 0) { |
295 | NEXT_ARG(); | |
296 | if (!on_off("learning", &learning, *argv)) | |
297 | exit(-1); | |
298 | } else if (strcmp(*argv, "flood") == 0) { | |
299 | NEXT_ARG(); | |
300 | if (!on_off("flood", &flood, *argv)) | |
301 | exit(-1); | |
a40d0827 | 302 | } else if (strcmp(*argv, "cost") == 0) { |
64108901 VY |
303 | NEXT_ARG(); |
304 | cost = atoi(*argv); | |
a40d0827 | 305 | } else if (strcmp(*argv, "priority") == 0) { |
64108901 VY |
306 | NEXT_ARG(); |
307 | priority = atoi(*argv); | |
a40d0827 | 308 | } else if (strcmp(*argv, "state") == 0) { |
64108901 VY |
309 | NEXT_ARG(); |
310 | state = atoi(*argv); | |
a40d0827 | 311 | } else if (strcmp(*argv, "hwmode") == 0) { |
64108901 | 312 | NEXT_ARG(); |
a40d0827 | 313 | flags = BRIDGE_FLAGS_SELF; |
64108901 VY |
314 | if (strcmp(*argv, "vepa") == 0) |
315 | mode = BRIDGE_MODE_VEPA; | |
316 | else if (strcmp(*argv, "veb") == 0) | |
317 | mode = BRIDGE_MODE_VEB; | |
318 | else { | |
319 | fprintf(stderr, | |
320 | "Mode argument must be \"vepa\" or " | |
321 | "\"veb\".\n"); | |
322 | exit(-1); | |
323 | } | |
324 | } else { | |
325 | usage(); | |
326 | } | |
327 | argc--; argv++; | |
328 | } | |
329 | if (d == NULL) { | |
330 | fprintf(stderr, "Device is a required argument.\n"); | |
331 | exit(-1); | |
332 | } | |
333 | ||
334 | ||
335 | req.ifm.ifi_index = ll_name_to_index(d); | |
336 | if (req.ifm.ifi_index == 0) { | |
337 | fprintf(stderr, "Cannot find bridge device \"%s\"\n", d); | |
338 | exit(-1); | |
339 | } | |
340 | ||
341 | /* Nested PROTINFO attribute. Contains: port flags, cost, priority and | |
342 | * state. | |
343 | */ | |
344 | nest = addattr_nest(&req.n, sizeof(req), | |
345 | IFLA_PROTINFO | NLA_F_NESTED); | |
346 | /* Flags first */ | |
347 | if (bpdu_guard >= 0) | |
348 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard); | |
349 | if (hairpin >= 0) | |
350 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin); | |
351 | if (fast_leave >= 0) | |
352 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE, | |
353 | fast_leave); | |
b1b7ce0f VY |
354 | if (root_block >= 0) |
355 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block); | |
f0f4ab60 VY |
356 | if (flood >= 0) |
357 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood); | |
358 | if (learning >= 0) | |
359 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning); | |
64108901 VY |
360 | |
361 | if (cost > 0) | |
362 | addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost); | |
363 | ||
364 | if (priority >= 0) | |
365 | addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority); | |
366 | ||
367 | if (state >= 0) | |
368 | addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state); | |
369 | ||
370 | addattr_nest_end(&req.n, nest); | |
371 | ||
372 | /* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that | |
373 | * designates master or self operation as well as 'vepa' or 'veb' | |
374 | * operation modes. These are only valid in 'self' mode on some | |
375 | * devices so far. Thus we only need to include the flags attribute | |
376 | * if we are setting the hw mode. | |
377 | */ | |
378 | if (mode >= 0) { | |
379 | nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC); | |
380 | ||
381 | addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags); | |
382 | ||
383 | if (mode >= 0) | |
384 | addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode); | |
385 | ||
386 | addattr_nest_end(&req.n, nest); | |
387 | } | |
388 | ||
389 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) | |
390 | exit(2); | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | static int brlink_show(int argc, char **argv) | |
396 | { | |
397 | char *filter_dev = NULL; | |
398 | ||
399 | while (argc > 0) { | |
400 | if (strcmp(*argv, "dev") == 0) { | |
401 | NEXT_ARG(); | |
402 | if (filter_dev) | |
403 | duparg("dev", *argv); | |
404 | filter_dev = *argv; | |
405 | } | |
406 | argc--; argv++; | |
407 | } | |
408 | ||
409 | if (filter_dev) { | |
410 | if ((filter_index = ll_name_to_index(filter_dev)) == 0) { | |
411 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
412 | filter_dev); | |
413 | return -1; | |
414 | } | |
415 | } | |
416 | ||
417 | if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETLINK) < 0) { | |
418 | perror("Cannon send dump request"); | |
419 | exit(1); | |
420 | } | |
421 | ||
422 | if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) { | |
423 | fprintf(stderr, "Dump terminated\n"); | |
424 | exit(1); | |
425 | } | |
426 | return 0; | |
427 | } | |
428 | ||
429 | int do_link(int argc, char **argv) | |
430 | { | |
431 | ll_init_map(&rth); | |
432 | if (argc > 0) { | |
433 | if (matches(*argv, "set") == 0 || | |
434 | matches(*argv, "change") == 0) | |
435 | return brlink_modify(argc-1, argv+1); | |
436 | if (matches(*argv, "show") == 0 || | |
437 | matches(*argv, "lst") == 0 || | |
438 | matches(*argv, "list") == 0) | |
439 | return brlink_show(argc-1, argv+1); | |
440 | if (matches(*argv, "help") == 0) | |
441 | usage(); | |
442 | } else | |
443 | return brlink_show(0, NULL); | |
444 | ||
445 | fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv); | |
446 | exit(-1); | |
447 | } |